There are people who like to watch shows and movies where there are a lot of fighting and guns and stuff like that. Some people think that watching those kinds of things can make people more likely to be violent or aggressive in real life.
So, grown-ups who study things like this have done some research to try to figure out if this is true. They have studied lots of people over many years, and they have found that sometimes when people watch violent things in movies and shows, they might not be as nice to other people afterwards.
But, some researchers say that just because someone watches violent stuff doesn't automatically mean they will become violent themselves. They say that other things like family, friends, and the environment you grow up in can also affect how you behave towards others.
So, the grown-ups who study this are still trying to learn more to decide what to do about the violent things in media. But it's important to remember that even if you love shows with fighting in them, you should still try to be kind to others in real life.